in a 1200 km journey, a man's driving speed was 60km/h for the last 1/4th of the journey. if he completed his journey in 17 hours, find his driving speed for the first 3/4 th of the journey.
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Answer:
75 Kmph
Step-by-step explanation:
Total Distance = 1200
1/4 of Total Journey = 300
Required Time to cover 300 Km = 300/60 = 5 Hours
Remaining time = 17-5 = 12 h
Required Speed = 900/12 = 300/4 = 75 Kmh [Ans ]
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